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    <script>
        // 检测昵称是否是有汉字字母数字下划线组成,6-8位
        let str1 = 'a就w_21';
        let str2 = 'adsa我 1_';
        let reg = /^([\u4e00-\u9fa5]|\w){6,8}$/
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        console.log(reg.test(str2))

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